Sanitary catchall drain trap



April 19, 1949. s BlRNBAUM 7 2,467,547

SANITARY CATCHALL DRAIN TRAP Filed March 18, 1948 an-3 i D/ 0- INVENTOR.

' SAMUEL L. BIENBAUM 32 BY Y I -u v ,4 TTOQNE Y Patented Apr. 19, 1949 UNITED STATES PATENT OFFICE 2,467,547 I SANITARY CATCHALL DRAIN TRAP Samuel L. Birnbaum, Ossining, N. Y. Application'March 18, 1948, Serial No. 15,555

This invention relates to plumbing fittings, and more particularly is directed to sanitary catchall drain traps which form seals as is generally required by building codes of sanitary and housing authorities, between sinks, wash basins, tubs, shower baths, lavatories and the like, and sewer disposal means for waste liquids passing through such traps.

Among the objects of the invention is to generally improve plumbing fittings of the character described, which shall comprise few and simple parts that are easy to assemble to form a neat appearing plumbing structure, which shall be readily incorporated into plumbing systems as substitutes of those presently in general use, or incorporated in new installations in complete compliance with the most rigid codes of sanitary and building authorities, which shall be relatively cheap to manufacture, which shall avoid plugging the drainage in by-passing and accumulating foreign material from the waste disposal, which shall permit ready cleaning, which shall facilitate retrieving of articles that accidentally pass down the drain, and which shall be efficient and practical to a high degree in use.

Other objects in this invention will in part be obvious and in part hereinafter pointed out.

The invention accordingly consists of features of construction, combination of elements and arrangement of parts which will be exemplified in the constructions hereinafter described and of which the scope of application will be indicated in the following claim.

In the accompanying drawing in which is shown various possible illustrative embodiments of the invention:

Fig. 1 is a side elevational view in vertical cross-section of a drain trap provided with a transparent by-pass accumulator constructed to embody the invention,

Fig. 2 is a fragmentary cross-sectional view of the improved drain trap taken on line 2-2 in Fig. 1 with the drain pipe and couplingomitted, and

Fig 3 is a fragmentary cross-sectional view like Fig. 1 but showing a metallic closure means substituted for the transparent by-pass accumulator.

Referring in detail to the drawing, l0 denotes a plumbing fitting in the form of a sanitary catchall drain trap constructed to embody the invention.

Said trap i0 is seen to comprise a metallic hollow body portion ll having a continuous bore or through passage Ila, which trap l0 when incorporated into a plumbing system in buildings and the like structures, is interposed between an overflow or drain D of a sink, wash basin, tubs, shower bath, lavatories, or the like, and a disposal drainage therefrom to a sewer line S in the well understood manner, as generally required by law under rigidly inspected building and sanitary codes of community governments.

Said trap body I I may be formed with an outlet end Hb for connecting with a pipe P of the sewer system S, an inlet end He normally positioned at substantially the same level as outlet end I lb for connecting with said drain D through a suitable coupling C, and an intermediate portion lld which is located a distance below the level of said outlet and inlet ends llb, He. Said distance or drop has been standardized for various diameters of pipes being used and consequently the direction or shape of the body portion passage Ila as is well understood. In any event, said distance is such as to provide a water trap of sufficient depth in said intermediate body portion l l d to seal odors and vapors from passing back from the sewer drainable disposal S up to .the drain D into the building.

Just short of a plane of the lowest effective level of intermediate body portion lld, as indicated in Fig. 1 by horizontal plane through X-X, there is provided by-pass or emptying opening I le, therein which is surrounded by a rim flange l I j, of angle cross-section, the latter preferably being formed integral with body portion lld.

Said rim flange llf may be constructed to have rigidly coupled thereto or connected therewith ,an enclosure member l2.

As shown in Figs. 1 and 2, rim provided with internally formed screw thread 7 llg, which is so constructed and arranged to couple with cooperating screw threads l2a provided on the neck lZb of member l2, the latter being bulbous or bottle shaped.

Member l2, when in efiectively coupled suspension, serves as a by-passing accumulator with respect to waste material down-flowing the drain D of trap it], said member l2 being made of any suitable transparent material, such as clear glass or \plastic so that the contents therein are visible. Said member l2 my be provided with a flattened bottom side lie to provide a supporting, not readily tippable, base I20 when said member i2 is dismounted and rested thereon for servicing said trap l0.

Between the neck l2b= of member l2 and an inner horizontal surface llk of rim flange Hi there may be provided a suitable leakproof joint,

flange l l f is' as for example, an interposed washer, packing or gasket l 3 clamped into effective position on tightly screwing neck thread 12a, into flange thread Hg as is clear from Figs. 1 and 2.

Midway between said outlet end Hb and inlet end llc within said passage Ha, and preferably forming an integral part of intermediate portion Hd, there may be provided an impervious detector or baflie Hh. The latter extends down across said through-passage Ha bisecting He and terminates in a horizontally extending edge Ha a short distance below the level of plane X-X so that a downflowing stream with waste material through said passage I la from drain D is defected by baflle Hh and is caused to pass beyond and under edge H7 into member I2 when passing from the inlet No to outlet lib as is clear from Figs. 1 and 2. Baflle Hh thus is seen to form a partition lying in vertical plane, indicated by line YY in Fig. 1, in the path of flow of said waste material within said intermediate body portion Hd.

In practicing the invention, trap I is constructed and assembled as described above and shown in the drawings, either in a new plumbing installation, or as a substitution of a conventional type of drain trap.

Flowing waste material passes in a stream as seen from Fig. 1 from the overflow or drain D as a downflow into body passage Ila and is de fected against one side of baflie llh, through one of the bisected portions of said opening He (as indicated by the arrow) into member l2 which fills and. upturn said stream within member I2 instead of within body portion l Id to pass through the other bisected portion of opening He on the other side of baifie Hh (also as indicated by the arrow) with minimum restriction and hence as an upflow passes to sewer S. This change of direction of the stream flow beingabrupt and wholly within member [2 will cause all material or sediment of specific gravity greater than that of the flowing carrier medium to separate out and settle in member [2. Should any article accidentally pass down the drain D, it can be readily retrieved in member l2 since it would be trapped in member l2 against passing to the sewer line S.

If desired, instead of using bulbous transparent member l2, a metallic plug cap 22 as shown in Fig. 3, may be substituted where the separable material in the stream flow is normally scant.

Said cap 22 is provided with a threaded peripheral rim portion 22a which corresponds to neck threads l2a of member l2 for screwing into said flange threads Hg against gasket l3, and is formed with a dished portion 22b extending a substantial distance [below said horizontally extending baiile edge H1 to provide an accumulator means operating in the manner like member l2 described above and shown in Figs. 1 and 2.

It is thus seen that trap ID as shown in the drawing and described above may have said entire body portion H with flange H) and baflie Hh made of a single casting which when installed normally is positioned as shown to provide a substantial U-shaped conduit between drain D and pipe P leading to the sewer S. The downflow of the waste stream from drain D enters inlet end i la into the bore 1 la partway down through intermediate portion H d, that is, into one side of said U-shaped conduit along baflle Hh and through one portion of said bisected opening He into enclosure member l2, or if cap 22 is used into dished portion 22b, where the abrupt change of direction of the stream flow across edge I I 7' takes place.

- Said stream flow, with the sediment separated out, then passes through the other portion of said bisected opening He as an upflow partway through intermediate portion Hd, that is, into the other side of said U-shaped conduit long bafile H71. and through outlet end llb through pipe P to the sewer S. The effective bisected areas of opening I le are relatively large and bfier practically no restriction to the direct stream flow.

It will thus be seen that there are provided devices whereby the several objects of this invention are achieved and which are well adapted to meet the conditions of practical use.

As various possible embodiments might be made of the above invention, and as various changes might be made in the embodiments above set forth, it is to be understood that all matter herein set forth or shown in the accompanying drawings is to [be interpreted as illustrative and not in a limiting sense.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

A sanitary catchall drain trap comprising a U-shaped hollow body having a continuous bore therethrough formed with inlet and outlet ends normally positioned at substantially the same level, an intermediate portion of said body being located at a distance below said level, said body intermediate portion having a by-pass opening in a region of the lowest level thereof, a rim coupling flange integrally formed with said body intermediate portion to extend about said opening for connecting with a removable enclosure member, and an impervious baffle integrally formed with said [body intermediate portion to extend as a partition within said bore midway between the inlet and outlet ends, said baiile bisecting the bypass opening and terminating beyond said region but at a spaced distance from the enclosing member, being so constructed and arranged that a stream of waste material passing through said trap has its direction of flow abruptly changed wholly within said enclosure member at spaced distance down from said by-pass opening for causing all material of specific gravity greater than that of the flowing carrier medium of said stream to separate out and settle in said member.

SAMUEL L. BIRNBAUM.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS 

